LUBRICATING OIL COMPOSITION Russian patent published in 2019 - IPC C10M111/04 C10M101/02 C10M107/02 C10M169/02 C10N20/02 C10N40/04 

FIELD: chemistry.

SUBSTANCE: present invention discloses a lubricating oil composition for automotive gearboxes (especially, fuel-saving type). Composition includes (A) as base oil, low-viscosity GTL base oil (kinematic viscosity of 2 mm²/s up to 5 mm²/s at 100 °C) in amount of 60 to 93 wt. %. in terms of total weight of lubricating oil composition, and (B) high-viscosity base oil of group 1 (kinematic viscosity of 30 mm²/s to 35 mm²/s at 100 °C) in amount of 2 to 20 wt. %. in terms of total weight of lubricating oil composition, wherein the lubricating oil composition contains a phosphorus-based additive, content of which ranges from 0.10 to 0.20 wt. %. in fractions of content of phosphorus, based on the total weight of the lubricating oil composition.

EFFECT: lubricating oil composition satisfies all requirements with respect to characteristics of resistance to agitation, preservation of oil film and low-temperature viscosity.

3 cl, 2 tbl